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