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