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