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