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