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