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