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