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