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