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