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)(17,18,22,25)(19,20,23,27)(21,24,30,32)(26,28,29,31)(33,34)(35,36)(37,45)(38,39)(40,41)(42,46)(43,47)(44,48)(2,6)(7,9)(8,12)(15,16)(17,19)(18,20)(21,29)(22,23)(24,31)(25,27)(26,30)(28,32)(34,39)(36,40)(37,46)(43,48) involution — undirected(3,10)(7,9)(11,13)(15,16)(19,23)(20,27)(26,29)(28,31)(33,35,38,41)(34,40,39,36)(37,43,46,48)(42,47,45,44)(1,3)(2,7)(4,13)(5,10)(6,9)(8,16)(11,14)(12,15)(17,20,22,27)(18,23,25,19)(21,28,30,31)(24,29,32,26)(33,35)(34,40)(36,39)(37,43)(38,41)(42,47)(44,45)(46,48)(1,4,5,14)(2,8,6,12)(3,11,10,13)(7,15,9,16)(17,18)(19,20)(21,24)(22,25)(23,27)(26,28)(29,31)(30,32)(33,36,38,40)(34,41,39,35)(37,44,46,47)(42,48,45,43)(1,2)(3,7)(4,8)(5,6)(9,10)(11,15)(12,14)(13,16)(17,21)(18,24)(19,26)(20,28)(22,30)(23,29)(25,32)(27,31)(33,37)(34,42)(35,43)(36,44)(38,46)(39,45)(40,47)(41,48) 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.