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