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