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