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