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