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