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