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