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