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