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