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