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