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