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