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