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