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