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