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