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