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