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)(20,28)(25,29)(26,32)(30,31)(33,34,37,40)(35,38,43,41)(36,39,45,48)(42,46,44,47)(1,3,7,5)(2,8,6,10)(4,11,14,13)(9,15,12,16)(17,18,22,21)(19,24,27,23)(20,25,28,29)(26,31,32,30)(33,34,37,40)(35,41,43,38)(36,39,45,48)(42,47,44,46)(17,19)(18,23)(20,26)(21,24)(22,27)(25,30)(28,32)(29,31)(33,34)(35,38)(36,39)(37,40)(41,43)(42,46)(44,47)(45,48) involution — undirected(1,4,7,14)(2,9,6,12)(3,11,5,13)(8,15,10,16)(17,19)(18,24)(20,26)(21,23)(22,27)(25,31)(28,32)(29,30)(33,35)(34,38)(36,44)(37,43)(39,47)(40,41)(42,45)(46,48)(1,5,7,3)(2,10,6,8)(4,13,14,11)(9,16,12,15)(17,20,22,28)(18,25,21,29)(19,26,27,32)(23,30,24,31)(1,6,7,2)(3,10,5,8)(4,9,14,12)(11,15,13,16)(17,21,22,18)(19,24,27,23)(20,29,28,25)(26,31,32,30)(33,36,37,45)(34,39,40,48)(35,42,43,44)(38,46,41,47)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.