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