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