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