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