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