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