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)(11,13)(12,14)(15,16)(17,18)(19,24)(20,22)(21,23)(27,31)(30,32)(2,6)(3,8)(9,11,12,15)(10,13,14,16)(17,19,21,22)(18,20,23,24)(3,8)(4,7)(10,14)(13,16)(17,20,21,24)(18,22,23,19)(25,26,29,28)(27,30,31,32)(1,3,5,8)(2,7,6,4)(9,10)(11,13)(12,14)(15,16)(17,20)(18,19)(21,24)(22,23)(25,27)(26,30)(28,32)(29,31)(1,4,5,7)(2,8,6,3)(9,11)(10,13)(12,15)(14,16)(17,18)(19,20)(21,23)(22,24)(25,28,29,26)(27,32,31,30)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.