One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,9,11,16)(4,13,10,7)(6,14,15,12)(17,18)(19,24)(20,29)(21,30)(22,25)(23,26)(27,31)(28,32)(1,3,10,14,5,11,4,12)(2,6,13,16,8,15,7,9)(17,19,23,28)(18,24,26,32)(20,21,27,22)(25,29,30,31)(3,11)(6,15)(9,16)(12,14)(17,20,21,19,23,27,22,28)(18,24,25,29,26,32,30,31)(1,3,10,14,5,11,4,12)(2,6,13,16,8,15,7,9)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.