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