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