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