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