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