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