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