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