I am seeing these two different reults, the CPU Engine is using the materials I set in the matnet node and giving me accurate result, but since I have a 3050 gpu I prefer the XPU engine to render out my frames, but it is rather using the color node in the donut geo. Why am I getting two different results and how do I change it?

Can you post the scene? It is hard to tell without looking at the scene.

If I had to guess, you're using a vex-based material? (eg classic/principled shader)
For XPU compatibility you should use MaterialX-based one (eg Mtlx Standard Surface).