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