Some options and descriptions:
Web Developer - Make websites for companies. Can be for a specific company, for a company that contracts to other companies, or can be a contractor. Can also be internal websites and many services that businesses use such as HR software, banking, etc.
Software Engineer - Can include web development but also includes standalone desktop software, mobile applications, etc.
Network Admin / IT Work - Typically manages technical setups for companies, is usually seen as IT not CS, but can be done with a CS degree.
Data Scientist - Usually more mathy but basically takes all the data from applications, websites, etc, and uses it to make models, predictions, and analysis for use in business decisions and beyond
AI Experts - This goes by many names but basically are people who work on algorithms which learn based on you or automate tasks. Self-driving cars, the Netflix recommendation system, Spotify daily playlists, how Facebook shows you ads, and more all use elements of AI. It’s a very hot field but takes a lot of knowledge to work with beyond usually just a bachelors degree in CS.
QA (Quality Assurance) Engineer - Someone who debugs programs, usually seen as a lower level position and is becoming less common. A CS degree is a bit overkill but allows for a fuller understanding of where bugs can occur.
This list is by no means exhaustive. Generally, there is so much growth because all companies are finding they need more and more tech to be competitive or even simply function in today’s world. Typically, someone with a CS degree will be using data and programming to create some sort of system that runs on a computer of some sort that powers some feature for some company, whether it be a local business or Apple.
If you really want to understand why CS is growing so much, think about how many CS majors have touched code that powers things you use daily. Social media, advertisements on every website, every website you use, apps like Venmo, your computer’s operating system, every iOS/Android update, the payment system that the shops you go to use, the promotional emails you get from your favorite brands, and the list just goes on. The ubiquity of tech is the reason for the CS boom we are currently in, and the seeming permanence of it is the reason that few still see it as a bubble that will pop to nothing. How much that bubble will deflate and when is another question.