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