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