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