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