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