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