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