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