I tried to install it directly from the website but it does not work:
PS C:\windows\system32> pip install https://download.pytorch.org/whl/cu110/torch-1.7.0%2Bcu110-cp38-cp38-win_amd64.whl
ERROR: torch-1.7.0+cu110-cp38-cp38-win_amd64.whl is not a supported wheel on this platform.