For any sort of technical or mechanical diagram, including timing belt diagrams, a good place to start is an image library.
I started off by checking Google Images and came up with this diagram for a 1998 2.4l Cavalier:
The original image can be found on autozone.com/repairinfo, which also carries step-by-step instructions on how to remove and install a timing chain which are good for all of the 2.3 and 2.4l Cavaliers ranges of the late 1990s.
Other sites you can go to for advice include 2carpros.com, which has a thread on repairing the timing chain for a 1999 2.4l Chevy Cavalier. Similar forums include fixya.com and cargurus.com. You will have to join these sites first before you can post a question asking for help.
If it's a question of a missing manual that's stopping you from repairing the timing chain, you might find the one you're looking for at workshop-manuals.com/chevrolet/cavalier, manualsonline.com or assets.gm.com/manuals.
Alternatively, you could watch this two part YouTube guide on how to replace the timing chain on a 1997 Cavalier to pick up some advice: