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