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