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