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