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