However it's nothing more than an abstract icon for generic diagrams.
I've seen links to some generic icon set that does contain a stencil claiming to be for the S3500-48P (front). The closest that I can find is a file named 'HPE-Networking-3xxx-Switches.vss' but it absolutely DOES NOT include the Aruba S3500-48P. I'm not understanding why I can't find a stencil for this.