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