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)(19,27,28,42)(20,24,33,41)(21,34,35,25)(23,36,37,30)(29,43,44,48)(31,40,32,39)(38,45,47,46)(1,3,5,8)(2,6,4,7)(9,10,12,13)(11,16,15,14)(19,28)(23,37)(27,42)(29,44)(30,36)(38,47)(43,48)(45,46)(1,2,5,4)(3,6,8,7)(9,10)(11,14)(12,13)(15,16)(17,19,21,30,22,28,35,36)(18,23,25,27,26,37,34,42)(20,29,32,46,33,44,31,45)(24,38,40,43,41,47,39,48)(3,8)(6,7)(10,13)(14,16)(17,20,22,33)(18,24,26,41)(19,29,28,44)(21,32,35,31)(23,38,37,47)(25,40,34,39)(27,43,42,48)(30,46,36,45)(1,4,5,2)(3,7,8,6)(9,11,12,15)(10,14,13,16)(17,21,22,35)(18,25,26,34)(19,30,28,36)(20,31,33,32)(23,27,37,42)(24,39,41,40)(29,45,44,46)(38,48,47,43)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.