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