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