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