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