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