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