Which version of Netsight are you using?
Are you looking for something like this? A couple of report of a couple of different switches and links?
If running 6.2 or 6.3, you should be able to right change the render option from grid to chart and save to report designer. Each component saved will be accessible in the report designer.
In order to graph a port, the switch/port has to collect stats on.
Use the report designer
Pick out the components for your report. These can come from custom reports, purview, wireless, nac etc.
Save and you can send yourself a pdf of your own report nightly/weekly/monthly.