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