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