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