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