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