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