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