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