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