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