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