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