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