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