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