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