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