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