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