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