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