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