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