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