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