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