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