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