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