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