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