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)(17,18,23,21)(19,27,30,24)(20,31,29,25)(22,26,28,32)(1,2)(3,9)(4,8)(5,6)(7,11)(10,15)(12,13)(14,16)(17,19)(18,24)(20,28)(21,27)(22,29)(23,30)(25,32)(26,31)(33,34,39,37)(35,42,36,40)(38,41,46,45)(43,48,44,47)(2,6)(7,9)(8,12)(14,15)(33,35,39,36)(34,40,37,42)(38,43,46,44)(41,47,45,48)(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,13)(15,16)(17,20,23,29)(18,25,21,31)(19,28,30,22)(24,32,27,26)(33,36,39,35)(34,40,37,42)(38,44,46,43)(41,47,45,48)(1,3,5,11)(2,7,6,9)(4,10,13,16)(8,14,12,15)(17,21,23,18)(19,27,30,24)(20,25,29,31)(22,26,28,32)(33,37,39,34)(35,42,36,40)(38,41,46,45)(43,47,44,48)(1,4,5,13)(2,8,6,12)(3,10,11,16)(7,14,9,15)(17,22,23,28)(18,26,21,32)(19,29,30,20)(24,31,27,25)(33,38)(34,41)(35,43)(36,44)(37,45)(39,46)(40,47)(42,48)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.