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