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