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