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