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