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