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