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