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