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