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