You can regraph your shader network in the Hypershade as you do in the Node Editor, using some of the same hotkeys and toolbar buttons. The following lists a few ways in which you can regraph your network.
Filter nodes from your graph: By default, the work area displays cameras, shading groups, and shading nodes. You can change the filter settings via the Show > Objects submenu of the work area marking menu.
You can also filter the nodes by name (in the filter field text box). Use * as a wildcard. See Hypershade work area toolbar.