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