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