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