Hi Bagcottage,
Your post piqued my interest and caused me to research this a bit on the various Microsoft forums. The consensus by many frustrated users is that you cannot run executables in S mode and therefore you cannot install full print drivers. The only option seems to be to switch out of Windows S mode to a standard version of Windows, but there is no way to switch back to Windows S mode once that is done. So you seem to be left to use the built-in drivers with whatever limited functionality they provide in S mode.
You can try downloading the Xerox Print Experience from the Microsoft Store to see if it works with whatever Windows chose to use as a driver for your printer. It's certainly not going to hurt anything and you can uninstall it easilly.
