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