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