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