Open the fig file. If there are multiple plot axes then click on the one that has the pcolor display (if there is only one plot axes you should be able to skip that.) Now at the command line,
view(3)
and you should see the surface.
pcolor is really just calls to surface() followed by a call to view() and turning the axes box on, so all you have to do to see it in 3d is change the view.