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