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