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