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