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