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