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