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