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)(17,18,21,24)(19,25,27,22)(20,23,29,32)(26,31,28,30)(34,38)(35,43)(36,46)(42,48)(1,3,7,5)(2,8,4,9)(6,13,14,11)(10,16,12,15)(17,19,21,27)(18,22,24,25)(20,28,29,26)(23,31,32,30)(33,34,39,38)(35,44,43,40)(36,41,46,47)(37,48,45,42)(2,4)(8,9)(10,12)(15,16)(17,18,21,24)(19,22,27,25)(20,23,29,32)(26,30,28,31)(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)(17,18)(19,22)(20,23)(21,24)(25,27)(26,30)(28,31)(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)(17,19)(18,22)(20,26)(21,27)(23,30)(24,25)(28,29)(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)(17,20,21,29)(18,23,24,32)(19,26,27,28)(22,30,25,31)(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.