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