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