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