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