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