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