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