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