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