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