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