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