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