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