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