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