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