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