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