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