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