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