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