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