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