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