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