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