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