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