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