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