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