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