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