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