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