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