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