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