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)(19,24)(20,25)(21,30)(22,26)(23,27)(28,31)(29,32)(1,3)(2,5)(4,8)(6,7)(19,28)(20,22)(21,29)(24,31)(25,26)(30,32) involution — undirected(9,11,12,16)(10,13,14,15)(17,19,23,21)(18,24,27,30)(20,28,22,29)(25,31,26,32)(2,6)(5,7)(17,20,23,22)(18,25,27,26)(19,28,21,29)(24,31,30,32)(3,8)(5,7)(17,21,23,19)(18,24,27,30)(20,29,22,28)(25,31,26,32)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.