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