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