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