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)(17,18,23,27)(19,28,29,24)(20,25,31,30)(21,22,26,32)(34,35)(36,43)(40,42)(44,45)(1,3)(2,9)(4,6)(5,13)(7,12)(8,14)(10,11)(15,16)(19,29)(20,31)(24,28)(25,30)(33,34,38,35)(36,41,43,39)(37,40,46,42)(44,48,45,47)(1,4,8,5)(2,10,7,15)(3,6,14,13)(9,11,12,16)(17,19,23,29)(18,24,27,28)(20,26,31,21)(22,30,32,25)(33,35,38,34)(36,41,43,39)(37,42,46,40)(44,48,45,47)(1,5,8,4)(2,10,7,15)(3,13,14,6)(9,11,12,16)(17,20)(18,25)(19,26)(21,29)(22,24)(23,31)(27,30)(28,32)(33,36,38,43)(34,39,35,41)(37,45,46,44)(40,48,42,47)(1,6,8,13)(2,11,7,16)(3,4,14,5)(9,10,12,15)(17,21,23,26)(18,22,27,32)(19,20,29,31)(24,30,28,25)(1,7,8,2)(3,12,14,9)(4,15,5,10)(6,16,13,11)(17,22)(18,26)(19,30)(20,28)(21,27)(23,32)(24,31)(25,29)(33,37,38,46)(34,40,35,42)(36,44,43,45)(39,47,41,48)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.