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