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