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