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