One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,11,13,16)(4,9)(5,10)(6,8)(7,12,15,14)(17,18,21,26,22,25,36,42)(19,27,30,43,28,23,37,39)(20,31,33,44,34,24,35,41)(29,38,45,47,32,40,46,48)(1,3)(2,7)(4,12)(5,14)(6,13)(8,15)(9,11)(10,16)(17,19)(18,23)(20,32)(21,30)(22,28)(24,40)(25,27)(26,43)(29,34)(31,38)(33,46)(35,45)(36,37)(39,42)(41,47)(44,48) involution — undirected(2,8)(7,15)(9,10)(11,16)(19,28)(23,27)(29,32)(30,37)(38,40)(39,43)(45,46)(47,48) involution — undirected(1,4,6,5)(2,9,8,10)(3,12,13,14)(7,11,15,16)(17,20,22,34)(18,24,25,31)(19,29,28,32)(21,35,36,33)(23,38,27,40)(26,44,42,41)(30,46,37,45)(39,48,43,47)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.