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