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