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