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