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