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