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