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