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