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