This is just native Sketchup, No Photoshop here.
Face Style: Shaded
Background Style: Grey
Profile Lines: On
Shadows: On (soft)
It’s the same as this screenshot I just took, however in this case, as I have imported geometry from Zbrush I have Edges turned off to get rid of the triangulation.
Edit: This one has edges + profiles on, similar to the example you provided. However in the example the shadows are slightly softer and it has a more pastel colour palette in the model giving a nicer look.
These models are all off to the Photoshop farm anyway so I don’t spend too much time making the actual colours, just enough so that they can be selected independently from the rest. In fact when preparing for Photoshop they are painted like this instead, grouping via intended colour groups/material. Just a poor many chroma key really!
Hope that helps!