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