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