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)(11,14)(12,13)(15,16)(17,18,21,26,22,27,34,24)(19,23,29,37,30,38,44,35)(20,25,33,42,32,41,46,39)(28,36,43,48,31,40,45,47)(1,3)(2,5)(4,8)(6,7)(10,13)(11,15)(17,19,22,30)(18,23,27,38)(20,31,32,28)(21,29,34,44)(24,35,26,37)(25,40,41,36)(33,45,46,43)(39,48,42,47)(9,11,12,15)(10,14,13,16)(18,24)(21,34)(23,35)(25,39)(26,27)(29,44)(33,46)(36,47)(37,38)(40,48)(41,42)(43,45)(2,6)(5,7)(10,13)(14,16)(17,20,22,32)(18,25,27,41)(19,28,30,31)(21,33,34,46)(23,36,38,40)(24,39,26,42)(29,43,44,45)(35,47,37,48)(3,8)(5,7)(20,32)(25,41)(28,31)(33,46)(36,40)(39,42)(43,45)(47,48) 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.