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