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