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