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