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