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