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