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