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