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