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