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