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