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