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