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