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