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