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