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