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