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