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