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