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