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