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