Microsoft released the Lync Server 2010 Visio Stencils.
Overview
Creating visual representations of your Microsoft Lync Server 2010 topology is a helpful way to communicate your Lync Server 2010 deployment. Using standard Microsoft Visio stencils helps those in your organization to better understand how you architect your Microsoft Lync 2010 by experiencing your deployment visually. Together, Lync Server and Lync 2010 can be powerfully represented by standard and expressive Visio artwork.
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=65b5a396-2c87-445d-be23-d324727d19cb
