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