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