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)(17,18,22,26)(19,24,29,23)(20,21,25,31)(27,30,32,28)(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)(20,27)(21,28)(22,29)(24,26)(25,32)(30,31)(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)(17,20,22,25)(18,21,26,31)(19,27,29,32)(23,28,24,30)(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)(18,24)(20,27)(21,30)(22,29)(23,26)(25,32)(28,31)(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)(18,25)(19,28)(20,26)(22,31)(23,32)(24,27)(29,30)(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.