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