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