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