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