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