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