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