I'm probably the only one here who would do this but if I found myself with a pair of Magico S3's in the future I would use the same cables I do today which are...wait for it...wait for it....
Mogami 2921 The Horror!!
I use Mogami everywhere. No Salt/Pepper/Unicorn hide or Pixie dust added or needed. It does its job just fine and the money saved goes towards things that offer unmistakable audible advantages like speakers,amps,DAC's..etc