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