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