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