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