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