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)(18,19)(22,23)(26,28)(30,31)(4,8)(6,7)(11,16)(13,15)(17,18,21,19)(20,22,24,23)(26,28)(30,31)(2,3)(6,7)(18,19)(20,24)(25,26,29,28)(27,31,32,30)(1,3,5,2)(4,7,8,6)(9,11)(10,13)(12,16)(14,15)(17,19,21,18)(20,23,24,22)(25,27,29,32)(26,30,28,31)(1,4,5,8)(2,6,3,7)(9,10)(11,13)(12,14)(15,16)(17,20)(18,22)(19,23)(21,24)(25,28,29,26)(27,31,32,30)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.