Use the filter field beneath the swatch in the Node Editor to filter out attributes. For example, if you want to isolate the color related attributes, type "col" and only attributes that contain the letters "col" are displayed.
You can filter by entering either the attribute long name or its UI name, for example: Subdivisions Axis or subdivisionsAxis.
Note: Connections to/from attributes hidden due to filtering are drawn instead from the master port.