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