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)(17,18,24,28)(19,23,27,22)(20,21,31,29)(25,30,32,26)(1,3,5,4)(2,6,8,7)(9,10)(11,14)(12,13)(15,16)(17,19)(18,23)(20,25)(21,30)(22,28)(24,27)(26,29)(31,32)(1,3,5,4)(2,7,8,6)(10,13)(14,15)(17,20,23,30,24,31,22,26)(18,25,19,29,28,32,27,21)(1,4,5,3)(2,6,8,7)(9,11,12,16)(10,14,13,15)(17,21,23,25,24,29,22,32)(18,26,19,20,28,30,27,31)(2,8)(6,7)(17,22,24,23)(18,19,28,27)(20,26,31,30)(21,25,29,32)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.