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