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