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