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