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