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