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