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