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