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