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