One vertex per element, one color per generator, with an edge from x to x·s.
(4,11)(6,13)(7,12)(9,15)(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)(1,2,5,8)(3,6,10,13)(4,12,11,7)(9,16,15,14)(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)(2,6)(4,9)(5,10)(7,14)(8,13)(11,15)(12,16)(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(1,4,5,11)(2,7,8,12)(3,9,10,15)(6,14,13,16)(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.