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