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