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