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