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