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