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