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