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)(17,18,21,26,22,23,35,37)(19,27,29,42,30,24,34,39)(20,25,32,41,33,36,45,46)(28,40,43,48,31,38,44,47)(1,3)(2,7)(4,12)(5,14)(6,13)(8,15)(9,11)(10,16)(18,23)(24,27)(25,36)(38,40) involution — undirected(2,8)(7,15)(9,10)(11,16)(17,19,22,30)(18,24,23,27)(20,31,33,28)(21,34,35,29)(25,40,36,38)(26,42,37,39)(32,43,45,44)(41,47,46,48)(1,4,6,5)(2,9,8,10)(3,12,13,14)(7,11,15,16)(17,20,22,33)(18,25,23,36)(19,28,30,31)(21,32,35,45)(24,38,27,40)(26,41,37,46)(29,43,34,44)(39,47,42,48)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.