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