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)(17,18,22,26)(19,21,25,23)(20,24,29,32)(27,28,31,30)(36,44)(40,47)(42,48)(45,46)(1,3)(2,8)(4,13)(5,14)(6,15)(7,16)(9,10)(11,12)(17,19,22,25)(18,21,26,23)(20,27,29,31)(24,28,32,30)(33,34)(35,39)(36,40)(37,41)(38,43)(42,46)(44,47)(45,48)(17,19)(18,23)(20,27)(21,26)(22,25)(24,30)(28,32)(29,31)(33,35)(34,38)(36,42)(37,43)(39,41)(40,45)(44,48)(46,47) involution — undirected(1,4,7,14)(2,9,11,6)(3,13,16,5)(8,10,12,15)(17,19)(18,21)(20,27)(22,25)(23,26)(24,28)(29,31)(30,32)(33,35)(34,39)(36,42)(37,43)(38,41)(40,46)(44,48)(45,47)(1,5,7,13)(2,10,11,15)(3,14,16,4)(6,8,9,12)(17,20,22,29)(18,24,26,32)(19,27,25,31)(21,28,23,30)(33,36)(34,40)(35,42)(37,44)(38,45)(39,46)(41,47)(43,48)(1,6,7,9)(2,4,11,14)(3,15,16,10)(5,8,13,12)(17,21)(18,25)(19,26)(20,28)(22,23)(24,31)(27,32)(29,30)(33,34)(35,38)(36,40)(37,41)(39,43)(42,45)(44,47)(46,48)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.