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