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