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