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