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