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