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