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