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