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)(17,18,21,27,22,28,23,29)(19,30,36,40,33,24,32,43)(20,26,37,25,35,42,34,41)(31,45,46,44,47,39,48,38)(1,3,5,8)(2,6,4,7)(9,10)(11,15)(12,14)(13,16)(17,19,22,33)(18,24,28,30)(20,31,35,47)(21,36,23,32)(25,38,41,44)(26,39,42,45)(27,43,29,40)(34,48,37,46)(1,2,5,4)(3,6,8,7)(9,11)(10,13)(12,16)(14,15)(17,20)(18,25)(19,31)(21,34)(22,35)(23,37)(24,38)(26,27)(28,41)(29,42)(30,44)(32,46)(33,47)(36,48)(39,43)(40,45)(1,2,5,4)(3,7,8,6)(11,16)(13,15)(17,20)(18,26)(19,31)(21,37)(22,35)(23,34)(24,39)(25,27)(28,42)(29,41)(30,45)(32,48)(33,47)(36,46)(38,43)(40,44)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(17,21,22,23)(18,27,28,29)(19,32,33,36)(20,34,35,37)(24,40,30,43)(25,26,41,42)(31,46,47,48)(38,45,44,39)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.