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