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