Hiding the cable blocks
Refined Storage does not add facades to hide cables.
However, RS has integration for MCMultiPart. That means you can hide any of the following blocks with mods that implement the MCMultiPart API:
At this moment (April 2018), the only mod that integrates with MCMultiPart in a way that allows hiding of cable blocks is Chisel & Bits.
Be sure to install MCMultiPart as well.