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