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