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