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)(11,15)(12,16)(13,14)(17,18,21,22)(19,23,26,30)(20,27,29,24)(25,32,31,28)(2,5)(3,7)(17,19,21,26)(18,23,22,30)(20,28,29,32)(24,31,27,25)(10,14)(15,16)(17,20,18,24,21,29,22,27)(19,25,30,32,26,31,23,28)(2,5)(6,8)(9,11,13,12)(10,15,14,16)(20,29)(24,27)(25,31)(28,32)(1,3,4,7)(2,6,5,8)(9,12,13,11)(10,16,14,15)(17,20,18,24,21,29,22,27)(19,25,30,32,26,31,23,28)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.