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