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