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