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