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