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