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