Can't be a driver issue if you are using the same driver as the Win 7 PC.
Assuming the GPD with PS and not that you are comparing the PCL vs PS GPD, because that will definitley get different output.
Beyond that would likely be App settings, like in Acrobat/Reader where you have "Let Printer determine color" that will also change the output.
We recently got a Xerox Workcentre 7970. My machine in IT is Windows 10 while all our user machines are currently Windows 7. When I print a document to the machine, the color is very off (best way to explain is that is defintely lighter in color) and doesn't match the output of when that same document is printed from a Windows 7 machine, which is the correct output that I am expecting.
Could it be a driver issue and Windows 10? I have tried both the desginated Windows 10 64bit driver and the Global Print Driver and have the same result. Our Windows 7 machine are using the latest Global Print Driver.