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