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)(18,23)(19,27)(20,22)(24,31)(28,29)(30,32)(2,5)(6,8)(9,11,14,12)(10,15,13,16)(17,18,21,23)(19,24,28,30)(20,25,22,26)(27,32,29,31)(9,10,14,13)(11,16,12,15)(17,19,21,28)(18,24,23,30)(20,27,22,29)(25,32,26,31)(1,3,4,7)(2,6,5,8)(9,12,14,11)(10,16,13,15)(17,20,21,22)(18,25,23,26)(19,27,28,29)(24,32,30,31)(9,13,14,10)(11,15,12,16)(18,23)(24,30)(25,26)(31,32)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.