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