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