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