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