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