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