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)(17,18,22,21)(19,25,27,23)(20,24,29,30)(26,32,28,31)(33,34,39,41)(35,45,46,40)(36,37,43,42)(38,48,47,44)(3,9)(7,13)(10,15)(14,16)(17,19,22,27)(18,23,21,25)(20,26,29,28)(24,31,30,32)(33,35)(34,40)(36,47)(37,48)(38,43)(39,46)(41,45)(42,44)(2,6)(7,13)(8,11)(14,16)(34,41)(35,46)(36,43)(44,48) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,19)(18,23)(20,28)(21,25)(22,27)(24,32)(26,29)(30,31)(33,36,39,43)(34,42,41,37)(35,47,46,38)(40,44,45,48)(1,3,5,9)(2,7,6,13)(4,10,12,15)(8,14,11,16)(17,20)(18,24)(19,26)(21,30)(22,29)(23,31)(25,32)(27,28)(33,37,39,42)(34,43,41,36)(35,44,46,48)(38,40,47,45)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,21,22,18)(19,25,27,23)(20,24,29,30)(26,31,28,32)(33,38,39,47)(34,44,41,48)(35,43,46,36)(37,40,42,45)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.