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