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