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