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