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