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