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