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