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