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)(17,18,24,27,23,19,22,28)(20,29,30,32,26,25,31,21)(9,10)(11,15)(12,14)(13,16)(17,19,23,18)(20,29,26,25)(21,31,32,30)(22,28,24,27)(1,3,5,4)(2,6,7,8)(9,11,12,16)(10,13,14,15)(17,20,23,26)(18,25,19,29)(21,28,32,27)(22,31,24,30)(11,16)(13,15)(17,21,24,29,23,32,22,25)(18,26,27,31,19,20,28,30)(1,4,5,3)(2,6,7,8)(10,14)(13,15)(17,22,23,24)(18,27,19,28)(20,30,26,31)(21,25,32,29)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.