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)(33,34,39,44)(35,45,47,40)(36,41,46,42)(37,43,48,38)(2,7)(3,12)(9,14)(10,13)(17,18,22,23)(19,21,25,30)(20,24,28,31)(26,29,32,27)(33,35)(34,40)(36,43)(37,41)(38,46)(39,47)(42,48)(44,45)(2,7)(3,12)(9,14)(10,13)(18,23)(19,25)(24,31)(26,32)(33,36,39,46)(34,41,44,42)(35,43,47,38)(37,45,48,40)(1,3)(2,8)(4,13)(5,14)(6,12)(7,11)(9,16)(10,15)(17,19)(18,21)(20,26)(22,25)(23,30)(24,29)(27,31)(28,32)(33,36)(34,42)(35,43)(37,45)(38,47)(39,46)(40,48)(41,44) involution — undirected(1,4,6,15)(2,9,7,14)(3,13,12,10)(5,8,16,11)(17,20)(18,24)(19,26)(21,29)(22,28)(23,31)(25,32)(27,30)(33,37,39,48)(34,43,44,38)(35,41,47,42)(36,45,46,40)(1,5,6,16)(2,10,7,13)(3,9,12,14)(4,11,15,8)(17,21)(18,25)(19,23)(20,27)(22,30)(24,26)(28,29)(31,32)(33,38,39,43)(34,37,44,48)(35,46,47,36)(40,41,45,42)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.