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