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