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