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