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