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