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