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