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