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