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