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