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