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