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