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