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