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