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