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