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