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