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