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