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)(17,18,22,21)(19,24,26,23)(20,25,28,29)(27,31,32,30)(36,44)(40,45)(43,48)(46,47)(2,7)(4,10)(8,11)(12,16)(19,26)(20,28)(23,24)(25,29)(33,34)(35,39)(36,45)(37,41)(38,42)(40,44)(43,46)(47,48) involution — undirected(17,19)(18,23)(20,27)(21,24)(22,26)(25,30)(28,32)(29,31)(33,35)(34,37)(36,43)(38,41)(39,42)(40,46)(44,48)(45,47) involution — undirected(1,3,6,14)(2,8,7,11)(4,12,10,16)(5,15,9,13)(17,19)(18,24)(20,27)(21,23)(22,26)(25,31)(28,32)(29,30)(33,35)(34,39)(36,43)(37,42)(38,41)(40,47)(44,48)(45,46)(1,4,6,10)(2,9,7,5)(3,12,14,16)(8,13,11,15)(17,20,22,28)(18,25,21,29)(19,27,26,32)(23,30,24,31)(33,36)(34,40)(35,43)(37,46)(38,44)(39,47)(41,48)(42,45)(1,5,6,9)(2,10,7,4)(3,13,14,15)(8,12,11,16)(17,21,22,18)(19,24,26,23)(20,29,28,25)(27,31,32,30)(33,37,38,39)(34,41,42,35)(36,46,44,47)(40,48,45,43)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.