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