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