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