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