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