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)(12,14)(15,16)(17,18,22,20)(19,23,21,24)(25,26,29,27)(28,31,32,30)(1,3)(2,5)(4,8)(6,7)(9,11,12,15)(10,13,14,16)(17,19,22,21)(18,23,20,24)(25,26,29,27)(28,30,32,31)(3,8)(5,6)(10,14)(13,16)(17,20,22,18)(19,23,21,24)(25,27,29,26)(28,31,32,30)(1,3)(2,6)(4,8)(5,7)(9,10)(11,13)(12,14)(15,16)(17,19,22,21)(18,24,20,23)(25,28)(26,30)(27,31)(29,32)(1,2)(3,5)(4,7)(6,8)(9,11)(10,13)(12,15)(14,16)(17,21,22,19)(18,23,20,24)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.