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