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