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