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