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