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