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