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