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