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