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