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