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