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