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