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