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