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