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