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)(11,15)(12,13)(14,16)(17,18,22,26)(19,23,30,37)(20,24,31,38)(21,25,33,40)(27,34,42,46)(28,35,29,36)(32,39,44,48)(41,45,43,47)(1,3,5,4)(2,6,8,7)(9,10)(11,14)(12,13)(15,16)(17,19)(18,23)(20,27)(21,28)(22,30)(24,34)(25,35)(26,37)(29,33)(31,42)(32,41)(36,40)(38,46)(39,45)(43,44)(47,48)(1,3,5,4)(2,7,8,6)(10,13)(14,15)(17,20,22,31)(18,24,26,38)(19,27,30,42)(21,32,33,44)(23,34,37,46)(25,39,40,48)(28,41,29,43)(35,45,36,47)(9,11,12,16)(10,14,13,15)(19,28)(21,33)(23,35)(25,40)(27,41)(29,30)(32,44)(34,45)(36,37)(39,48)(42,43)(46,47)(1,4,5,3)(2,7,8,6)(20,31)(24,38)(27,42)(32,44)(34,46)(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.