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