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