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