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