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