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