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