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)(11,14)(12,15)(13,16)(1,3,5,4)(2,6,8,7)(9,11,13,12)(10,14,16,15)(17,18)(19,25)(20,30)(21,31)(22,24)(23,28)(26,27)(29,32)(1,3,5,4)(2,7,8,6)(9,11,13,12)(10,15,16,14)(17,19,22,29)(18,23,24,30)(20,27,28,21)(25,26,32,31)(9,12,13,11)(10,15,16,14)(18,24)(19,20)(21,27)(23,25)(28,29)(30,32)(1,4,5,3)(2,6,8,7)(17,20)(18,25)(19,27)(21,29)(22,28)(23,26)(24,32)(30,31)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.