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