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