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