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