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