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