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)(8,14)(12,15)(13,16)(17,18)(19,27,30,23)(20,24,32,39)(21,26)(22,25)(28,43)(29,44,47,37)(31,48)(33,40,34,42)(35,41)(36,45)(38,46)(2,7)(3,12)(4,5)(8,11)(9,10)(15,16)(17,19)(18,23)(20,31,32,46)(21,29)(22,30)(24,38,39,48)(25,27)(26,37)(28,33,45,34)(35,47)(36,40,43,42)(41,44)(1,3,4,13,6,12,5,14)(2,8,9,15,10,16,7,11)(17,20)(18,24,25,39)(19,28)(21,34)(22,32)(23,36,27,43)(26,42,41,40)(29,46)(30,45)(31,47)(33,35)(37,48,44,38)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.