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