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