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