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