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