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