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