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