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