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