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