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