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)(18,24)(19,21)(26,31)(27,29)(33,34,39,38)(35,42,37,40)(36,41,46,45)(43,48,44,47)(1,3,7,12)(2,8,11,16)(4,15,9,6)(5,10,14,13)(17,18,23,24)(19,25,21,20)(22,26,30,31)(27,32,29,28)(33,35,39,37)(34,40,38,42)(36,44,46,43)(41,48,45,47)(3,12)(6,15)(8,16)(10,13)(17,19,23,21)(18,25,24,20)(22,29,30,27)(26,28,31,32)(33,36,39,46)(34,41,38,45)(35,43,37,44)(40,47,42,48)(1,4)(2,5)(3,6)(7,9)(8,13)(10,16)(11,14)(12,15)(17,20)(18,19)(21,24)(22,28)(23,25)(26,27)(29,31)(30,32)(33,37,39,35)(34,42,38,40)(36,44,46,43)(41,48,45,47)(1,5)(2,9)(3,13)(4,11)(6,16)(7,14)(8,15)(10,12)(17,21,23,19)(18,25,24,20)(22,29,30,27)(26,32,31,28)(33,34,39,38)(35,40,37,42)(36,41,46,45)(43,47,44,48)(1,6)(2,10)(3,4)(5,16)(7,15)(8,14)(9,12)(11,13)(17,22,23,30)(18,26,24,31)(19,27,21,29)(20,28,25,32)(33,38,39,34)(35,42,37,40)(36,45,46,41)(43,48,44,47)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.