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)(17,18,22,26)(19,23,30,39)(20,24,34,43)(21,25,35,44)(27,36,29,38)(28,37,31,40)(32,41,33,42)(45,47,46,48)(2,5)(6,8)(9,11,12,15)(10,13,14,16)(17,19,22,30)(18,23,26,39)(20,31,34,28)(21,27,35,29)(24,40,43,37)(25,36,44,38)(32,46,33,45)(41,48,42,47)(10,14)(13,16)(19,27)(20,32)(21,35)(23,36)(24,41)(25,44)(29,30)(33,34)(38,39)(42,43)(45,46)(47,48) involution — undirected(1,3,4,7)(2,6,5,8)(17,20)(18,24)(19,28)(21,32)(22,34)(23,37)(25,41)(26,43)(27,45)(29,46)(30,31)(33,35)(36,47)(38,48)(39,40)(42,44)(19,29)(20,32)(21,35)(23,38)(24,41)(25,44)(27,30)(28,31)(33,34)(36,39)(37,40)(42,43) 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.