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