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