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