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