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