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