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