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