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