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