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