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