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