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