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