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