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