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