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