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