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