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