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