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