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