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