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