I created this Visio stencil set while working on various SoftGrid engagements while Softricity was still homeless (a.k.a. before the Microsoft Acquisition).  It includes SoftGrid clients, the various server components and also some individual shapes for creating your own objects.  Some of the shapes are show below:

SoftGrid Visio Stencil Samples

Download:    SoftGrid Visio Stencils (275 KB)