One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,6)(3,7,4,8)(9,10)(11,14)(12,16)(13,15)(2,6)(7,8)(9,11,14,10)(12,16,13,15)(17,18,21,24)(19,26,28,22)(20,23,29,25)(27,31,32,30)(1,3,5,4)(2,7,6,8)(10,11)(15,16)(17,19,21,28)(18,22,24,26)(20,27,29,32)(23,30,25,31)(9,12,14,13)(10,15,11,16)(18,23)(20,29)(22,30)(24,25)(26,31)(27,32)(1,4,5,3)(2,7,6,8)(9,13,14,12)(10,16,11,15)(18,24)(22,26)(23,25)(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.