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