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