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