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