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