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