A more popular alternative to Apple's MPW on the mac was the 3rd party Lightspeed Pascal (later renamed THINK Pascal), which in many ways was quite similar to Turbo Pascal on the PC.
IIRC TP was just a quick port & had a very short life on the mac.
With that one, you could surely do graphics programming on the Mac.
As for Turbo Pascal itself, I wasn't aware it was available on the Mac as well.