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