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