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