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