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