To go along with the other Modern Visio stencils I have created (http://gallery.technet.microsoft.com/Modern-Style-Visio-da5a7470/view/Reviews) I've created some Operations Manager 2012 stencils.
They cover the basics.
They are based on the modern style stencils from Microsoft available here.
Hopefully they'll be of assitance to you!
Please remember to give a rating (pref 5 stars!)
Please note they are for Visio 2013.