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