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