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