One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,8)(5,7)(17,18,20,25,21,24,29,23)(19,26,28,31,27,22,30,32)(1,2,6,3)(4,7,5,8)(9,10)(11,15)(12,14)(13,16)(17,19,21,27)(18,22,24,26)(20,28,29,30)(23,31,25,32)(1,3,6,2)(4,7,5,8)(9,11)(10,13)(12,16)(14,15)(17,18)(19,26)(20,23)(21,24)(22,27)(25,29)(28,32)(30,31)(1,4,6,5)(2,7,3,8)(11,16)(13,15)(19,27)(22,26)(28,30)(31,32)(1,5,6,4)(2,7,3,8)(10,14)(13,15)(17,20,21,29)(18,23,24,25)(19,28,27,30)(22,31,26,32)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.