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