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