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