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