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