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