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