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