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