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)(33,34,38,39)(35,37,42,40)(36,44,46,41)(43,47,48,45)(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)(34,39)(35,42)(41,44)(43,48)(17,19)(18,23)(20,26)(21,24)(22,27)(25,30)(28,32)(29,31)(33,34)(35,40)(36,41)(37,42)(38,39)(43,47)(44,46)(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)(33,35,38,42)(34,40,39,37)(36,43,46,48)(41,47,44,45)(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)(33,36,38,46)(34,41,39,44)(35,43,42,48)(37,45,40,47)(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)(33,37,38,40)(34,42,39,35)(36,45,46,47)(41,48,44,43)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.