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