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