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)(13,15)(14,16)(19,23)(21,24)(25,26,28,30)(27,29,31,32)(2,6)(4,7)(9,10,13,15)(11,12,16,14)(1,3,5,8)(2,7,6,4)(9,11,13,16)(10,14,15,12)(17,18,20,22)(19,21,23,24)(25,26)(27,29)(28,30)(31,32)(1,3)(2,4)(5,8)(6,7)(9,11)(10,12)(13,16)(14,15)(17,19)(18,21)(20,23)(22,24)(25,27,28,31)(26,29,30,32)(1,4)(2,3)(5,7)(6,8)(9,12)(10,11)(13,14)(15,16) 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.