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