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)(19,27)(20,25)(21,24)(22,31)(23,26)(28,29)(30,32)(33,34,38,40)(35,41,43,36)(37,39,46,48)(42,45,47,44)(1,2,6,3)(4,9,12,7)(5,8,13,10)(11,15,16,14)(17,19,23,21)(18,24,26,27)(20,28,31,30)(22,29,25,32)(33,35,38,43)(34,36,40,41)(37,42,46,47)(39,44,48,45)(2,3)(7,9)(8,10)(14,15)(17,20,23,31)(18,22,26,25)(19,28,21,30)(24,29,27,32)(1,3,6,2)(4,9,12,7)(5,10,13,8)(11,15,16,14)(17,20)(18,25)(19,28)(21,30)(22,26)(23,31)(24,32)(27,29)(1,4,6,12)(2,7,3,9)(5,11,13,16)(8,14,10,15)(17,21,23,19)(18,24,26,27)(20,30,31,28)(22,29,25,32)(33,36)(34,35)(37,45)(38,41)(39,47)(40,43)(42,48)(44,46)(1,5,6,13)(2,8,3,10)(4,11,12,16)(7,14,9,15)(17,22,23,25)(18,20,26,31)(19,29,21,32)(24,28,27,30)(33,37)(34,39)(35,42)(36,44)(38,46)(40,48)(41,45)(43,47)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.