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