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