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