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