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)(11,13)(12,14)(15,16)(17,18)(19,27)(20,25)(21,23)(22,26)(24,30)(28,39)(29,43)(31,44)(32,40)(33,37)(34,38)(35,41)(36,42)(45,47)(46,48) involution — undirected(2,5)(6,8)(9,11,12,15)(10,13,14,16)(18,23)(19,28)(20,31)(22,34)(24,39)(25,42)(27,41)(30,35)(33,36)(37,44)(40,43)(45,46)(10,14)(13,16)(17,19,21,30)(18,24,23,27)(20,32,33,29)(22,35,34,28)(25,43,37,40)(26,39,38,41)(31,46,36,45)(42,48,44,47)(17,20,21,33)(18,25,23,37)(19,29,30,32)(22,36,34,31)(24,40,27,43)(26,42,38,44)(28,45,35,46)(39,47,41,48)(1,3,4,7)(2,6,5,8)(18,23)(20,33)(24,27)(26,38)(29,32)(31,36)(39,41)(45,46)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.