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