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