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