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