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