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