Hi Mahendar,

what information should the diagram show?
- physical design (cabling, rackspace,...)
- conceptual design (abstract high level diagram with components nodes, cluster, network ,...)

- logical design (logical entities within the cluster for example: vswitches, storagepools, containers,..)

- physical design (cabling, rackspace,...)

as far is i know there are no visio stencils for XC available.
you can download the poweredge pedant visio collection from visiocafe.com
https://www.visiocafe.com/dell.htm

here an example just for reference

if possible can you please share 

- logical design (logical entities within the cluster for example: vswitches, storagepools, containers,..)