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