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