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