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)(17,18,21,27,23,29,22,28)(19,30,32,42,34,41,33,24)(20,25,36,26,37,44,38,45)(31,43,35,46,47,40,48,39)(1,3,7,6)(2,8,11,16)(4,12,5,13)(9,15,10,14)(17,19,23,34)(18,24,29,42)(20,35,37,48)(21,33,22,32)(25,43,44,40)(26,39,45,46)(27,41,28,30)(31,38,47,36)(1,4,7,5)(2,9,11,10)(3,12,6,13)(8,15,16,14)(17,20)(18,25)(19,31)(21,36)(22,38)(23,37)(24,39)(26,27)(28,45)(29,44)(30,43)(32,35)(33,48)(34,47)(40,41)(42,46)(1,5,7,4)(2,10,11,9)(3,13,6,12)(8,14,16,15)(17,20)(18,26)(19,31)(21,38)(22,36)(23,37)(24,40)(25,27)(28,44)(29,45)(30,46)(32,48)(33,35)(34,47)(39,41)(42,43)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.