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