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