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