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