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