One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(17,18,22,26)(19,27,30,23)(20,31,34,39)(21,35,37,25)(24,32,41,28)(29,38,36,42)(33,46,47,44)(40,43,48,45)(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,16)(13,14)(17,19,22,30)(18,23,26,27)(20,32,34,28)(21,36,37,29)(24,39,41,31)(25,42,35,38)(33,43,47,45)(40,44,48,46)(2,6)(5,7)(10,14)(15,16)(17,20,19,28,22,34,30,32)(18,24,23,31,26,41,27,39)(21,33,29,43,37,47,36,45)(25,40,38,44,35,48,42,46)(2,6)(5,7)(9,11,13,12)(10,15,14,16)(17,21,22,37)(18,25,26,35)(19,29,30,36)(20,33,34,47)(23,38,27,42)(24,40,41,48)(28,43,32,45)(31,44,39,46)(3,8)(5,7)(9,12,13,11)(10,15,14,16)(21,37)(25,35)(29,36)(33,47)(38,42)(40,48)(43,45)(44,46)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.