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