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